This is a ball and socket vac adapter for tools with 26mm (1") hose connection and 36mm vac hose.
This adapter improves handling of the tool by providing some freedom to the vac connection. The vac hose can rotate freely and tilt within an angle of 16.5° in each direction. Especially the freedom in rotation eases handling.
The provided STL files are refined over the ones shown in the pictures.
The Ring must be glued on after printing as shown in the picture.